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cocamq's Introduction

cocamq

基于netty 的简单mq实现

 网络通讯层netty
 持久层NIO 顺序写
 broker的负载均衡基于zookeeper

1.写入测试

 启动zookeeper
 修改zkconfig.properties configure.properties
 gradle dist 打包
 解压缩zip包到任意目录
 运行bin/broker.sh 启动broker
 客户端运行MessageProducerTest.java

硬件

 mac os 5400 SATA硬盘 I5 2.4Ghz 8GB内存
 windows 7 5400 SATA硬盘 I5 2.6GHz 8GB内存
 centos 6 Linux 2.6.32 16G 8核

写入速度

 tcp_wmem min4096 default 16384
 tcp_rmem min4096 default 87380
 消息1k   10w循环写   tps 5w/s
 Linux broker 和 mac producer。
 jvm配置8G

2.读取速度

tcp_wmem min4096 default 16384
tcp_rmem min4096 default 87380
初步完成
运行junit MessageConsumerTest.java
利用nio+netty zerocopy
broker transferTo consumer
消费者仿照kafka方式，根据offset向broker拉取固定长度消息 
拉取1m数据<1ms

关于写入比较(利用nio Filechannel顺序写 和 MappedByteBuffer)

在mac os 下MappedByteBuffer性略高nio Filechannel 顺序写 (与可利用内存有关)
在windows 下mapedbuffer性能好于filechannel顺序写。快10-20%
详见MsgFileStorageTest.java和UseMappedFile.java

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Forkers

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